Hey guys. This is my first dwc. I got 2 Humboldt headbands 2 weeks old in dwc. They are under a t5 4ft 8 bulb. 4 red and 4 blue. I'm running ph 5.6 and currently at 340ppm. I knowticed this morning that my res temps are like 78. I'm using gh flora 3 part and cal mag+ with distilled water and...